Other Protocols

A PromiseKit abstraction of a DispatchQueue that allows for a more flexible variety of implementations. (For technical reasons, DispatchQueue itself cannot be subclassed.)

Dispatchers define a dispatch method that executes a supplied closure. Execution may be synchronous or asynchronous, serial or concurrent, and can occur on any thread.

All DispatchQueues are also valid Dispatchers.

///////////////////////////////////////////////////////// Cancellation An error that may represent the cancelled condition